Final answer:
To find out how much oil can be stored in 27 tanks, multiply the amount of oil that can be stored in one tank by the number of tanks. The total amount of oil that can be stored in 27 tanks is 1.35 x 10^9 gallons of oil.
Step-by-step explanation:
To find out how much oil can be stored in 27 tanks, we need to multiply the amount of oil that can be stored in one tank by the number of tanks.
Since each tank can hold 5 x 10^7 gallons of oil, we can multiply this by 27 to get the total amount of oil that can be stored in 27 tanks.
The calculation would be:
5 x 10^7 gallons x 27 tanks = 135 x 10^7 gallons of oil
This can also be written in scientific notation as 1.35 x 10^9 gallons of oil.